def count_gold_placements(notes):
    MOD = 10**9 + 7
    n = len(notes)
    westmost_gold, eastmost_gold = float('-inf'), float('inf')
    gold_pos = set()
    unknowns = 0

    for i, note in enumerate(notes):
        if note == 'o':
            gold_pos.add(i)
            westmost_gold = max(westmost_gold, i)
            eastmost_gold = min(eastmost_gold, i)
        elif note == '<':
            eastmost_gold = min(eastmost_gold, i)
        elif note == '>':
            westmost_gold = max(westmost_gold, i)
        elif note == '.':
            unknowns += 1

    if westmost_gold > eastmost_gold:
        return 0

    if len(gold_pos) == 0:
        return pow(2, unknowns, MOD)

    count = 0
    for i in range(westmost_gold, eastmost_gold+1):
        if i not in gold_pos:
            count += 1

    return pow(2, unknowns, MOD) * count % MOD

t = int(input())
for case in range(1, t+1):
    notes = input().strip()
    print(f"Case #{case}: {count_gold_placements(notes)}")